Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 35 for “"ensemble average"”.
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Search for rare events in [the square root of sigma nu nu] = 200 GeV Au+Au PHOBOS data
… deviates more than statistically from the ensemble average dN/dn distribution for s [the square root of sigma nu nu] = 200 GeV Au+Au collisions in PHOBOS data. We carefully remove events that may exhibit non-statistical fluctuations due to other effects, such as event pileup and detector …
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Improving hydrometeorologic numerical weather prediction forecast value via bias correction and ensemble analysis
… decisions. This research compared weighted-average, recursive, and model output statistics bias-correction methods and determined optimal window-length to calibrate temperature and precipitation forecasts. The research evaluated seven different methods for daily maximum and minimum …
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Characterization of knocking combustion and heat transfer in a spark ignition engine
… transfer were explored by studying changes in ensemble-average heat flux with increasing knock intensity, and also by the magnitude of the correlation coefficients between peak heat flux and the developed knock indices.
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Optical Modeling And Analysis Of Disordered Plasmonic Nanoparticle Ensembles
… inhomogenity and disorder in nanoparticle ensembles give rise to challenge in their characterization using conventional methods and in turn, their application. This work aims to develop models as guideline to design facile characterization methods that can be used to effectively describe …
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STUDY OF AIR BUBBLE INJECTION INTO LAMINAR AND TURBULENT WATER FLOW THROUGH AN ANNULAR TEST SECTION
… bubble coalescence was observed to occur. The ensemble-average bubbles trajectory data showed that the bubble follow a similar trajectory in the annular flow channel following their departure from the injection hole
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Operating System Identification by IPv6 Communication using Machine Learning Ensembles
… We introduce a collaborative neural network ensemble that uses a unique voting system and a random forest ensemble to deliver accurate predictions. This approach uses IPv6 features as well as packet metadata features for OS identification. Our experiment shows that our approach is valid and …
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Impact of time and spatial averages on the energy balance closure
… to investigate the impact of time and spatial averages on the energy balance closure. This data consisted of many observations over a large heterogeneous landscape that could generate secondary circulations; some of which might be still near the earth's surface. For the time average analysis, …
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Efficient integral equation based algorithms for parasitic extraction of interconnects with smooth or rough surface
… surface roughness in O(Nlog2Ì(N)) time. An ensemble average Green's function is used to account for the surface roughness. A second-order correction scheme is used to improve the accuracy. A sparsification technique based on the Hierarchical Matrix method is proposed to significantly reduce …
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Role of fluctuations and defects in select condensed matter problems
… onto which finite-time work is done, as an ensemble average over all possible trajectories of the system. We quantify the regime of applicability of this equality by considering the role of rare fluctuations which dominate the work average of entropy generating processes. Lastly, we consider …
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An Investigation of the Multiple Scattering of Waves in Two-Dimensional Random Media
Numerical studies of the ensemble average, or coherent, wave in a two-dimensional random medium have been undertaken for the steady-state and transient cases. The medium consisted of a tensioned mesh with a uniform distribution of point masses attached at the intersection points of the mesh. For …
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Mechanical unfolding of membrane proteins captured with single-molecule AFM techniques
… of occurrence were not represented in the ensemble average of the single-molecule measurements. As mechanical unfolding, similarly to bond rupture, is a force-dependent process, force-clamp technique can allow for a more direct way of probing protein unfolding and is anticipated to be also …
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Theoretical Simulations of Optical Rotation and Raman Optical Activity of Molecules in Solution
… the measured chiroptical response represents an ensemble average of orientations. Thus, accurate prediction of chiroptical properties requires adequate conformational averaging. Here we show that OR and ROA of molecules in solution can be modeled using a combination of structure sampling and …
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Single particle motion of polymeric, colloidal, and biological materials
… would be overlooked by methods which time or ensemble average. The various particle systems are also similar in that frequently, the signal-to-noise ratio represented a significant concern. In many cases, development of image analysis and particle tracking methods optimized to low …
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Dynamic recurrent neural networks for stable adaptive control of wing rock motion
… the growth criteria based on the properties of ensemble average memory formation of the Preisach model. The recurrent feature of the RBF network deals with the dynamic nonlinearities and endowed temporal memories of the hysteresis model. The control of wing rock is a tracking problem, the …
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Computational framework for metastable materials discovery: integrating kinetics and accurate properties
… metastable states that can be represented via an ensemble average of structures from random sampling. We show that this representation offers a method to accurately compute electronic structure of amorphous materials. A band-like conduction state and wave-like electron transport are accurately …
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Soft matter engineering for cellular bioelectronic interfaces
… singular behaviours otherwise obscured by an ensemble average. However, a key limitation is the availability of effective approaches that enable such investigations in a micro-environment mechanically and biologically conducive to individual cells. In this thesis, micron-scale soft-matter …
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Kinetics and dynamics controlling proton-coupled electron transfer in ribonucleotide reductase
… distribution of the Y¹²²* cofactor from its ensemble average of 1.2 Y*/[beta]₂ , revealing that [beta]₂ contain either 2 or 0 Y*. Circumventing rate-limiting conformational changes that gate turnover, photoinitiated RNRs were prepared to allow photochemically driven Y₃₅₆ oxidation, and …
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Linear and nonlinear stochastic differential equations with applications
… wave kinetic technique. The equations for the ensemble average of the Wigner distribution function are defined within the framework of the smoothing approximation. Special attention is paid to the so-called long-time Markovian approximation, where the discrete nature of the quantum mechanical …
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Effects of foot placement on resultant joint moments in the lower extremity joints during the squat
… (within), and `gender' (between) being factors. Ensemble-average normalized resultant joint moment patterns were also analyzed to identify the changes in the moment patterns. There was a significant interaction between stance width and toe angle in the normalized sagittal-plane resultant joint …
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Quantification of Cumulative Load on the Knee using a Vibration Emission Method
… dynamics. Results: A visual inspection of an ensemble average constructed for the frequency spectrum of all participants revealed that differences may exist in the 750 Hz - 2000 Hz bandwidth for vibrations coming from the patella during flexion. Further statistical analysis by a t-test and …
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